MATLAB?????????? ???GT (1)

1
MATLAB?????????????GT (1)

• ?????????????? ?? ??

2
??

• ??MATLAB??????????????GT(GpsTools)???????MATLAB???
  ??????????????????????????
• GT????????????????????

3
??

• MATLAB????????????????????????
• ???????????????????
• ???(???)?????????????
• ???????????????????

4
?? (1)

• 4? Matlab?GT???
• 5? Matlab?????????
• 6? Matlab???????????
• 7? Matlab 2D/3D???????
• 8? Matlab?????????????
• 9? Matlab?????MEX???I/F

5
?? (2)

• 10? GT????????????
• 11? GT????????
• 12? GT???????????
• 1? GT???????????? (1)
• 2? GT???????????? (2)
• 3? ?????????

6
MATLAB (1)

• MATrix LABoratory
• Mathworks? (?)
• ??????????
• ??????????????????????????????(Visualization)...
• Toolbox?Simlink etc
• ????? Octave,Scilab,...

7
MATLAB (2)

• ?????????????
• C??????? (if, while, for, switch...)
• ?????????
• ????
• ?????????????
• m-file???????????
• ????????????? (?????)(??????????????????etc ...)

8
MATLAB (3)

• ??????????????
• ???????????????????????????????????????? etc...
• ????????????
• ????????(Toolbox)
• ????????????GUI???
• ?????

9
MATLAB (3)

• ??
• ?????????
• ?????????
• ??
• ??????/????????SW
• ??? (????????Matlab???)
• ?????????

10
MATLAB???

• ???? ?
• ???????????????????
• ????????????????
• ??????????????????
• ????????
• ??? ?
• ???????????????
• ??????????????????

11
C vs MATLAB (1)
??????????
C
void kuku(void) int i,j for
(i1ilt9i) for (j1jlt9j)
printf("2d ",ij) if (j9)
printf("\n")
MATLAB
function kuku (19)'(19)
12
C vs MATLAB (2)
?????(YAX)??????
CLAPACK
int solve(const double A, const double Y, int
n, int m, double X) int info,ipiv(int
)malloc(sizeof(int)n) double B(double
)malloc(sizeof(double)nn)
memcpy(B,A,sizeof(double)nn)
memcpy(X,Y,sizeof(double)nm)
dgetrf_(n,n,B,n,ipiv,info) if (!info)
dgetrs_("N",n,m,B,n,ipiv,X,n,info)
free(B) free(ipiv) return info
MATLAB
function Xsolve(A,Y) XA\Y
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GT (1)

• MATLAB??????????????????
• ?? ver.0.6.3 (2006/7)
• ???? Bernese?GIPSY/OASIS-II
• ????????(PPP)????????????????etc ...

14
GT (2)

• ???????m-file 22.1K, C-MEX 5.9K (ver.0.6.1)
• ?????????
• (1) MATLAB???????
• (2) ???????????
• (3) ??????m-file?C-MEX??????
• (4) ????????C??????(?)

15
GT (3)

• MATLAB????????
• ???RINEX , SP3, IONEX, PCV etc
• ????
• ???????
• ??????
• ???????
• ?????????
• ?????????????GUI etc

16
GT????????
RINEX????/??????/??????
tdcaltomjd(2007,1,1) t03086370 sats
for i131,satssats,sprintf('GPS02d',i)
end nav,inavreadnav(td,t,sats,'0053') obs,io
bsreadobs(td,t,sats,'0053') tt,junique(iobs
(,1)) j0,j' for i1length(j)-1
kj(i)1j(i1) ppointpos(td,tt(i),obs(k,3),
iobs(k,23),nav,inav) pos(i,)eceftogeod(p)
end figure, hold on, grid on, box
on plot3(pos(,1),pos(,2),pos(,3),'.')